TY - GEN

T1 - Behavior of outage probability in MISO systems with no channel state information at the transmitter

AU - Jorswieck, E. A.

AU - Boche, H.

N1 - Publisher Copyright:
© 2003 IEEE.

PY - 2003

Y1 - 2003

N2 - It is well known that, in terms of the ergodic capacity, the optimum transmit strategy is to allocate equal power to all available transmit antennas. We show that this transmit strategy is not the optimal one for minimizing the outage probability. The optimum strategy is then to avoid using all available antennas. The optimal number of active antennas depends on the required rate and the SNR. We propose an algorithm which computes the optimum number of active antennas for a given available number of transmit antennas, SNR, and rate. We compare the optimum strategy to equal power allocation.

AB - It is well known that, in terms of the ergodic capacity, the optimum transmit strategy is to allocate equal power to all available transmit antennas. We show that this transmit strategy is not the optimal one for minimizing the outage probability. The optimum strategy is then to avoid using all available antennas. The optimal number of active antennas depends on the required rate and the SNR. We propose an algorithm which computes the optimum number of active antennas for a given available number of transmit antennas, SNR, and rate. We compare the optimum strategy to equal power allocation.

UR - http://www.scopus.com/inward/record.url?scp=84939171833&partnerID=8YFLogxK

U2 - 10.1109/ITW.2003.1216766

DO - 10.1109/ITW.2003.1216766

M3 - Conference contribution

AN - SCOPUS:84939171833

T3 - Proceedings - 2003 IEEE Information Theory Workshop, ITW 2003

SP - 353

EP - 356

BT - Proceedings - 2003 IEEE Information Theory Workshop, ITW 2003

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 2003 IEEE Information Theory Workshop, ITW 2003

Y2 - 31 March 2003 through 4 April 2003

ER -